Draft-rigging



G, T. MOORE.

DRAFT RIGGING.

APPLICATIDN FILED JUNE I7, 1918.

1919, 4SHEETSSHEET 2.

Patented Nov. 4,

Lszmsa 8 TL S S E N H W G, T. MOORE.

DRAFT RIGGING.

APfLlCATION FILED JUNE 17, {918.

1 20,563. Pate nted Nov. 4, 1919.

4 SHEETSSHEET 3.

G. T. MOORE.

DRAFT RIGGING.

APPLICATlON FILED mm: 17. 1918 Patented Nov. 4, 1919.

'ATTORY 4 SHEETS-SHEET 4.

WiTNESSES:

G. T. MOORE.

DRAFT HIGGING APPLICATION FILED JUNE 17. I'9l8.

4 SHEETS-SHEET I.

INVENTOR ATbNEY tages in view an rrnnr eerie.

GEORGE E. MGQBE, Q16 MILWAUKEE, WISCONSIN, ASSIGNOR 0F ONE-HALF TOWILLIAM F. HOFFMAN, OF CHICAGO,

ILLINOIS.

DRAFT-RIGGING.

Specification of Letters .Patent.

Patented Nov. 4, 1919.

Application filed June 17, 1918. Serial No. 240320.

To all '10 ham it may concern:

Be it known that I, GEORGE T. Moons, a citizen of the United States, andresident of Milwaukee, in the county of Milwaukee and State ofWisconsin, have invented certain new and useful Improvements inDraft-Rigging; and I do hereby declare that the following is a full,clear,'and exact description thereof. y v

This invention relates to new and useful improvements in draft andbuffing rigging and is designed for use in connection with the draw-barsof railway trains and in various other arts.

This rigging is of the usual combination friction and spring resistancetype, the particular object of the present invention being to provide adouble acting device of this character which will have a very extensivefriction surface. In other words the rigging includes an elongatedfriction shell -move apart to their normal position.

' A further object is to provide a device of this character having twospaced sets of friction elements with means for normally holding thesesets of elements apart.

With these and other objects and advanthe invention resides in the novelfeatures of construction, combination and arrangement of parts whichwill be hereinafter more particularly described and claimed.

In the accompanying drawings Figure 1 represents a plan view of one end.portion of the running gear of a railway car having my invention appliedto the draw-bar thereof, said inventionoeing shown inlongitudinah'section. I

Fig. 12 is a plan view partly in section of the invention illustrated inFig. 1.

Fig. 3 is an eievational view of a pair of friction elements showing thefriction fintherein. The friction Fig. 4 is a similar view with a pairof said elements arranged in dissembled position. Flgl 5 is an end viewof the form of the invention depicted in Figs. 1 and 2.

Fig. 6 is a transverse sectional view taken on the plane of the line 6-6of Fig. 1.

Fig. 7 is a similar view on the plane of the line 7-7 of Fig. 3.

Fig. 8 is a longitudinal sectional view through a modified form of myinvention, such section being taken on the plane of the line 8-8 0f 9.

Fig. 9 is a view of the form of my invention illustrated in Fig. 8, thefriction shell being in longitudinal section and the fric- A tilonelements and associated parts being in an. Fig. 10 is an enlargedtransverse sectional View on the plane of the line 10-10 of Fig. 8. Fig.11 represents a longitudinal sectihnal view of a third modification ofthe invention, said section being taken on the plane of the line ll-11of Fig. 12, and

Fig. 12 is a' transverse sectional view on the plane of the line 1212 ofFig. 11.

Referring particularly to Figs. 1 to 7 inclusive, which illustrate oneform of my invention, it will be seen that the same in eludes a frictionshell or easing 1 mounted between the usual center sills A of the frameof "a railway car, and that the combined friction and spring resistingmeans is located shell 1 is further p0- sitioned between spaced frontand rear stops B and C respectively which extend inward y from the sillsA. As is customary in the application of devices of this character,front and rear follower plates D and E re-" spectively are adapted tocoiiperate with their corresponding stops Band C, and. the draw-bar F isconnected with the follower plates by means of a draw-bar eagtension inV The operating parts of the invention inclosed within the frictionshell'l, the opposite ends of which are open so that the same can movetherethrou-gh, comprise two spaced sets of friction elements 2." and 3,-each set of which includes four identiczilly shaped elements. Thoseelements are so constructed that when assembled in operative positiontheir periphery forms a circle whereby effective cobpcrstion may be badwith the inucr surface or friction face of the shell 1. Also each oftlic friction elements has a laterally extending friction finger 4: ofsuch length that when the two sets of'elements 2 and 3 are spaced atconsiderable dist-once opart tliey will overlap the oppositecorresponding element oi the other set. That is to suy the lingers areof less width than the elements. from whiolitheyjoxtend so that whenassembled they interlock as clearly in- (licatod in Figs. 211ml 5 to '3;Each of the fingers is substantially the length of the friction shell 1so that when the of ele ments 5: and 3 are expanded a. mofimum com tactwill be had between. the friction face of tho shell Ii and said fingers.

Expansion of the sets of friction clements 2 and 3 is procured by themovement or s; pair of wedge members 5 sod formed between 6respectively, the outer ends ct which contact with the follower plates Dand E. Each of the Wedge members has inwardly extend ing cam facesWlIlGllfiOllGSPOHd with similar faces. on each of the several irictionelements forming the sets 2 and 3 whereby when said members are movedtoward'ooc latter will be expanded; The small ends of the Wedge-membersaro positioned inwardly or toward each other and, their outer ends areshouldered as at 7, such shoulders being adapted to abut an inwardlyextending flange 8 on cachof the wedge iicembors.

An oxponsile coil spring 9' having its op osite ends engaged withsaidgwcdge momcrs 5 and 6 is l coted withiio the cavity 10 blue twoset'sof friction slements-2 and 3 by the fingers d; tlif. Also disposedin this covitylo arc a. oirot exp'onsile coil springs 11 end 1.5? bothor; which surround the first mentioned spring 9, the spring 11 beingconsiderably heavier and of roster diameter than the other spring 12,aid springs 11 and 12 bear against the ends of the cavity formed by thesets 2 and 3 and normally urge the latter away from each other.Excessive outward movement of the wedge members by the spring 9 isprcvcntod by a bolt 13 that, extend longitudinally through the frictionshell, said Wedge members being slidcbly mounted on the opposite endsthereof. Said wedge members are thus free to move inwardly toward eachother, but the head 14 of the bolt '18 and a nut 15 on the opposite endlimit outward movement.

It is believed that the operation of this form of my invention isreadily obvious from exan'iination of Fig. 1, but briefly it may be setforth as follows: Assuming that the car on which the invention i mountedis to be coupled through the draw-bar F to a secother, the

the drovwbor in the some direction. shifts the Wedge member 5 inwardlytoward the other wcdgc member to thusoxpsnd the set of frictionelomoiits 2 and ongcge their fixigers 4 with the friction shell 1, thefriction elements 2 being siimiltzmeously moved in I tho some directionto compress tine springs 11 and 12. Thus the increase in tension ofthose a rings moves the friction elements 3 inwordy and against thewedge member 6," Which s held stat onary by the follower plats E. Theset 3 of friction elements also toespsnd because of the feet that thefliltlOlifiilgbm 4 thereof are; over leppcd'witli the correspondingfriction eloments of the set 2. Therefore when a risk is applied to thedraw-bar a force is quickly excited for the purpose of retarding andstopping the movement thereof. Whom soul draw-bar is movedin on oppositodirection the operations of the port oi the invention just describedWillbe reversod.

Unlike the bowl of the invention just described which has its movableports located in an open ended friction shell and retained in sssemblcclmist-ion by the bolt 13, the modification illustrated in Figs 11 and 12includes a. two-part casing or friction shell 20, the sonic being 3littmnsverscly. Coupling flanges 21 arc ormc'd ll-i the abutting oradjacent edr'es oithe two parts of the shell whereby t e latter may besecured to? getber by bolts 22. Each vopposite end of the shell has acentral opening through A which the boss 23 of a \wecl e member 24: ex-

tends. Tho bosses are a ipted to be en eged'by the follower plates l3and E or y any ot icr parts of the mechanism with which the invention isassociated. v

The fticcs 0:51 the Wedge members 2i are inclined inwardly and the smallends thereof are positioned toward each other, said ends being engagedby an cxpsiisile coil spring 25; this spring; urgosthe Wedge members 24away from each other sl d into engagement with the endsoi the shell.Movement thereof in on outward directiob is thus limited.

The com faces of this Wedge members 24 cocct with the inclinedhfaces oithe several similarly shaped friction elements which when assembledprovidc two distinct-sets 26 and 27, one of the members being cz'igagcdwith each set. Each of the friction elements ranged in overlappingposition with respect I to the other set undclternately with the fingerthereof (see particularly Fig. 12). When the sets of elements 26 and 27are err panded by y the inward movement of the wedge members 24, saidfingers 28 are frictionally engaged with the inner surface of the shell20. I I i v A pair of expansile coil springs 29" and 30 are-disposedbetween the two sets of friction elements and engage tlierewithito holdthe same apart. ent modification is similar to that of the formpreviously described.

Figs. 8, 9 and 10 disclose athi'rd modification of my invention,the-friction shell or casing *0 in this case being open at one end andclosed at the other, the closure wall having a central hole to permit atubular boss 4.1 of a wedge member 42 to extend outwardly and externallyof the hell. The cooperating wedge member 43 is substantially similar inshape to the first mentioned wedge member i2 and has its small endextending toward the corresponding end of the other. These wedge membersslide on a centrally disposed bolt 4%, their outward movement withrespect to each other being limited by the head -15 of said bolt ed'onits opposite end.

In this form of the invention, the friction members 47 and.48 whichcooperate with the Wedge members 42 and i3 respectively are considerablydifferent in design. For instance each of the elements .i'i'has acentral longitudinally extending rib. 49 formed on its' peripherwhereasthe other elements 48 each carry a friction finger 50,. 1

' throughout the length of the shell. a wedge each of said fingers aswill be seen from Fig. '7

The outer surface of 'thesefingers :iOand the similan surface of theribs 49 form l friction faces for cooperation. with the in-.

terior wall of. the friction shell iO. "Because:

of this relationship of the friction elen' ents,

the wedge members %2:and {14f are disposed at (lifi'eren'tangles asindicated in" Fig. 1Q, this being'difi'erent from the relation of thewedgejmei ib'erg used in the othe'r no'difica i,

'tlODS; i L r EX'pansilesp lngsfil and .bear against the two setsoffriction elements fori'ned by the elements i-7 and 48' to normallyurge the same apart, outward movement thereof; be-

ing limited by the bolt l4. Similarly the wedge ,n'iembers "42 and 43are normally urged part-by an expansile coil Spring -SS, theoppositeends of. which engage the inner ends of the members. The generaloperationofthis forin 'ofinyn invention is also "identical to that ofthe other modifications andltl ierefore 'llBQlIl not be particularlydescribed. From the foregoing description taken in 1 eon nectitin withthe it will [be tibvii-ius tli at a. considerable ad- -'v,ance has beenmade in the art relating to The operation of this presmembers eachclosed end having 'edges, and means connecting the and a nut 46 threadl0overlap two of the elements 457.;

, have liQIElllliOSOl} my thecounty of'Milwaukee and State oflVisaccompanying drawings .ing a closed end casing split transverselyintermediate its ends to form two housing a central opening. coactingcou )ling flanges surroundingthe housing mem ers at their adjacentflanges, a pair o friction elements disposed .one in each housing memberand projecting into the other, a wedge member engageable with each ofthe elements, each of said wedge members having a boss extending throughthe opening in the adjacent end of the casing, and resilient expansilemeans hetween said wedge mei bers.

2.1n a rigging of the class described, a relatively stationary frictionshell, a pair of friction. elements disposed one at each end of theshell, a friction finger formed on the peripheral surface of each ofsaid elements, each of the fingers being extended laterally from itselement and toward the other element longitudinally of the shellfsaidfingers being of less width than the elements, the free end of eachlinger engaged with the peripheral surface of the whereby to )rovide afriction surface substantially member engaged with each of the elements,and resilient expansile means between said wedge members.

3: In; a rigging of the class described, a relatively stationaryfriction shell, a friction element at one end of the shell. a.longitudinally extending rib formed on the peripheral surface of saidelen-ient, a pair of friction elements at the opposite end of thesliell,-a friction finger extending from each of said pair offrictionelements, the free ends of said fingers being slidably engagedwith the peripheral surface of the being slidably first; mentionedfriction clement. one of the.

fingers being on each side of saidv longitudinal rib, whereby to providea friction surface substantially throughout the length of the shell, awedge member engaged with the first mentioned friction means betweensaid \vedge'm'embei's.

GEORGE 'T oons.

element. a second wedge member engaged with .the pair' of frictionelements, and resilient expansil'e I claim the foregoing I i

